COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The first stage in The Fetch-Execute cycle is Fetch Instructions
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The Fetch Cycle Step 1: The address in the program counter is moved to the memory address register(MAR), as this is the only register which is connected to address lines of the system bus.
Detailed explanation-2: -Fetch – gets the next program command from the computer’s memory. Decode – deciphers what the program is telling the computer to do. Execute – carries out the requested action. Store – saves the results to a Register or Memory.
Detailed explanation-3: -The first step the CPU carries out is to fetch some data and instructions (program) from main memory then store them in its own internal temporary memory areas. These memory areas are called ‘registers’. This is called the ‘fetch’ part of the cycle.
There is 1 question to complete.